In a sample group of almost 800, participants were asked to sit at a computer and take a series of tests that “required full concentration in order to score well [and were] geared to measure participants’ available cognitive capacity.” Translation for those of us whose iPhones are in the same room with us right now: The test was difficult.

Maybe if there's a way to just put it inside your brain...

Participants were instructed to put their phones on silent, and then at random, they were asked to place their smartphones either face-down on the desk, in their pocket or bag, or in another room. Those who put their phones in a different room significantly outperformed those who had their phones in proximity.

The findings suggest that even if you’re not actively engaged with your phone, the effort required to tell your brain not to think about your phone and concentrate on something else greatly diminishes your brain power.

Moral of the story: Distance makes the heart grow fonder, so don't worry about spending time apart from Siri every once in a while.